Seiko Cal. 3891 - 855

The Seiko 3891-855 represents an important milestone in Seiko's 1967 lineup. The Bidirectional bezel and 38mm case give it a distinctive presence on the wrist. [seikata-wm-a739350b881c]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

38mm

Case Thickness

8.2mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Silver

Jewels

18j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1967

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